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| author | Jan Schmidt <list.btrfs@jan-o-sch.net> | 2012-04-27 12:41:45 -0400 |
|---|---|---|
| committer | Chris Mason <chris.mason@oracle.com> | 2012-04-27 13:55:13 -0400 |
| commit | 3e74317ad773ba9df36db1fa32848cba41ac4d1a (patch) | |
| tree | ad017d3a85aeaf32dbfd5c63312ff200502d33a7 | |
| parent | 996d282c7ff470f150a467eb4815b90159d04c47 (diff) | |
| download | blackbird-op-linux-3e74317ad773ba9df36db1fa32848cba41ac4d1a.tar.gz blackbird-op-linux-3e74317ad773ba9df36db1fa32848cba41ac4d1a.zip | |
Btrfs: fix repair code for RAID10
btrfs_map_block sets mirror_num, so that the repair code knows eventually
which device gave us the read error. For RAID10, mirror_num must be 1 or 2.
Before this fix mirror_num was incorrectly related to our stripe index.
Signed-off-by: Jan Schmidt <list.btrfs@jan-o-sch.net>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
| -rw-r--r-- | fs/btrfs/volumes.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 3b984173d25b..1411b99555a4 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -3807,10 +3807,11 @@ static int __btrfs_map_block(struct btrfs_mapping_tree *map_tree, int rw, else if (mirror_num) stripe_index += mirror_num - 1; else { + int old_stripe_index = stripe_index; stripe_index = find_live_mirror(map, stripe_index, map->sub_stripes, stripe_index + current->pid % map->sub_stripes); - mirror_num = stripe_index + 1; + mirror_num = stripe_index - old_stripe_index + 1; } } else { /* |
